A sphere of emissivity 0.70 has radius 0.60 m and temperature 300 K
PHYSICS · Multi-part · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
A sphere of emissivity 0.70 has radius 0.60 m and temperature 300 K. The temperature of the surroundings is assumed to be 0 K.
(a) What is the intensity of the emitted radiation?
(b) What is the intensity of the received radiation at a distance of 2.2 m from the centre of the sphere?